Like I said at the top of this thread.
No stock bike has yet exceeded the fastest officially recorded top speed of 194 mph, set by a '99 Busa, and for which it is in the Guinness book of world records for doing so.
There have been higher recorded speeds for stock Busas, based on GPS measurement, and even using timing equipment. But no bike has set an official record over 194 mph.
Even the Muzzy run at Maxton, with their claimed stock ZX-12 was only 192.???, that's close, but it is still slower.
In day to day comparisons between individual bikes, outcomes can be a toss up.
Variables such as the size of the rider, state of tune of each bike (maybe one needs a tune-up), properly lubed and adjusted chains, can all have an effect on the outcome of any comparison.
Does it matter if one bike is a couple of mph faster than another, in real life, no. But even If a bike is only faster by a few mph, it's still faster.
Until another bike exceeds 194 mph, officially, the Busa is the fastest production bike, period.